
X = int(input())

if X >=1800:
    print('1')
elif X >=1600:
    print('2')
elif X >=1400:
    print('3')
elif X >=1200:
    print('4')
elif X >=1000:
    print('5')
elif X >=800:
    print('6')
elif X >=600:
    print('7')
elif X >=400:
    print('8')
 X = int(input()) X int(input()) int input() input if X >=1800:
    print('1')
elif X >=1600:
    print('2')
elif X >=1400:
    print('3')
elif X >=1200:
    print('4')
elif X >=1000:
    print('5')
elif X >=800:
    print('6')
elif X >=600:
    print('7')
elif X >=400:
    print('8') X >=1800 X 1800 print('1') print '1' elif X >=1600:
    print('2') X >=1600 X 1600 print('2') print '2' elif X >=1400:
    print('3') X >=1400 X 1400 print('3') print '3' elif X >=1200:
    print('4') X >=1200 X 1200 print('4') print '4' elif X >=1000:
    print('5') X >=1000 X 1000 print('5') print '5' elif X >=800:
    print('6') X >=800 X 800 print('6') print '6' elif X >=600:
    print('7') X >=600 X 600 print('7') print '7' elif X >=400:
    print('8') X >=400 X 400 print('8') print '8' X = int(input()) int(input()) X

X = int(input())

if X >=1800:
    print('1')
elif X >=1600:
    print('2')
elif X >=1400:
    print('3')
elif X >=1200:
    print('4')
elif X >=1000:
    print('5')
elif X >=800:
    print('6')
elif X >=600:
    print('7')
elif X >=400:
    print('8')

